Step 2: Use BioGuard SmartShock® to oxidize and clarify the water. The product works as a fast-dissolving shock that allows you to swim 15 minutes after application. This step is also known as “shocking the pool”.

Step 3: Prevent algae with BioGuard Back Up™ Algae Inhibitor. Back Up is specially formulated to work with Smart Sticks and BioGuard Smart Shock to prevent all types of algae from growing in pool water. It requires no mixing or pre-dissolving.

BioGuard also offers effective brominating products for pools and spas across a wide pH range. Brominating products can be used on all pool types (including above ground) to leave pools virtually odor-free.